Method of applying hobnails to shoes



pews,v 1942- 'r. F. CARFAGNO v 2,304,301

METHOD OF APPLYING HOB NAILS TO SHOES Filed Sept. 2, 1941 4 Sheets-Sheet 1 1 I INVENTOR.

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Dec. 8, 1942- 'T. F. CARFAGNO 2,304,301

METHOD OF APPLYING HOB NAILS T0 SHOES Filed Sept. 2, 1941 4 Sheets-Sheet 2 3 INVENTOR.

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METHOD OF APPLYING HOB NAILS TO SHOES 7 Filed Sept. 2, 1941 4 Sheets-Sheet 4 mmm.

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Tz-J'Y U74 Patented Dec. 8, 1942 METHOD OF APPLYING HOBNAILS T SHOES Thomas F. Carfagno, Hanover, Pa., assignor to Cannon Shoe Company, Baltimore, Md., a corporation of Massachusetts Application September 2, 1941, Serial No. 409,309

4 Claims.

This invention relates to new anduseful improvements in methods and apparatus for attaching hob nails to shoes, it being the principal object of the invention to provide such a method and such an apparatus as will permit hob nails tobe uniformly, quickly and effectively applied to shoes of various sizes, with the nails being sework and time ordinarily required to accomplish the result and thus enable increased production at reduced cost.

A still further object of the invention resides in providing an improved die which will effectively and uniformly produce openings in a sole to enable the hob nails to be inserted therein and quickly and eflectively engaged and secured thereto.

A still further object resides in providing an improved die which is designed to accommodate soles of various sizes, so that with several dies it is possible to produce a complete line or run of army shoes. a

Still another object of the invention resides in providing an improved die which not only provides openings in a tap or sole to accommodate hob nails but which simultaneously provides means for securing the tap or sole to the shoe.

With these and numerous other objects in view, my invention consists of the novelfeatures of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims.

In the accompanying drawings, forming a part of this application,

Figure 1 is a plan view of the die with the taps or soles of shoes being shown in dot-and-dash lines;

Figure 2 is a front elevational view thereof;

Figure 3 is a bottom plan view of the same; Figure 4 is a plan view of the adjusting plate removed from the die; t

Figure 5 is a vertical transverse section through the plate as seen on the line 55 of Figure 4;

Figure 6 is a horizontal sectional View taken substantially on the line 6-6 of Figure 2;

- Figure '7 is a vertical section asseen onthe line '|1 of Figure 6;

Figure 8 is a similar view as seen on the line 88 of Figure 6;

Figure 9 is a vertical transverse section as seen on the line 9-9 of Figure 6; i l

Figure 10 is a sectional view showing the die with the sole or tap thereon in relation to the plunger, the latter being in the position it assumes before it descends;

Figure 11 is a transverse sectionalview through the die showing its relation to the plunger when the latter is lowered to permit the openings to be formed in the tap or sole; 7

Figure 12 is a vertical transverse section as seen on the line l2i2 of Figure 10;

Figure 13 is a detailed sectional View taken substantially on the line 13-43 of Figure 14, showing the indentations or openings made in the sole or tap after removal from the die;

Figure 14 is a fragmentary plan View of one of the soles or taps removed after the openings have been made therein;

Figure 15 is a transverse sectional view on an enlarged scale taken on the line |5l5 of Figure 14;

Figure 16 is a sectional view showing the hob nails supported on the sole preparatory to being secured thereto; and

Figure 17 is a similar view showing a press applying the hob nails to the sole.

.I-Ieretofore, considerable time and labor has been Wasted in the application of hob nails to soles of shoes, due to the method or methods used. The various steps in these previous methods, requiringconsiderable time and labor, naturally required higher, cost of production. My improved method contemplates a method and apparatus which will uniformly, effectively and expeditiously apply hob nails to shoes which will overcome the difliculties heretofore encountered and which will speed up production and thus reduce cost of production.

In describing my invention I shall refer to the "drawings in which similar reference characters designate corresponding parts throughout the everal views and in which the numeral l designates the sole or tap of a shoe, such sole being shown by dot-and-dash lines in Figure 1 of the drawings. My method contemplates the locking of such soles or taps on the upper face of the die, the locking means being adjustable according to the size of the sole or tap, the application of pressure by a plunger or press on the soles applied to the die, so that wedge-shaped depressions are formed in one face of the soles, the removal of the soles from the die for the insertapered prongs [6 arranged in series.

tion in these uniformly arranged wedge-shaped depressions of hob nails. After these hob nails are quickly inserted in these uniformly arranged depressions, the sole with the nails so inserted and held therein is placed in position so that a plunger or press may quickly secure these nails in place and clinch the same to the soles, whereupon the latter are ready to be nailed or stitched to the shoe. Thus, the hob nails are applied uniformly, without being upset in various directions and without the heads thereof being hammered out of shape.

Referring to the drawings further, the die comprises a base plate 2 which has secured to the upper face thereof by the medium of the screws 3 a top plate 4, the latter having permanently secured thereto a plurality of wedgeshaped upstanding prongs 5 which arearranged on said plate in a predetermined relation or position to correspondingly form openings in the tap or sole in a predetermined relationship.

Frictionally held between certain of the wedgeshaped prongs 5 are the spronge rubber [blocks 6 which absorb shock when pressure is applied to the die, as will be hereinafter and more particularly set forth.

In certain parts of the zplate 4i openings i are provided which register with sockets 8 formed in the base plate 2, which permit coil spring 9 to be received in said sockets and projected upwardly through through the openings 7 above the plate 4, as clearly shown in Figures 6 to 9, in clusive. As many of these coil springs may be provided as is found necessary, I have shown a .reasonably large number thereof.

The upper ends of these springs 9 contact with a movable plate If! from which depend a plurality of guide studs H. These guide studs project through registering openings l2 and I3 formed respectively in the top plate 4 and base plate 2 and the opening l3 has the bore thereof enlarged a short distance below the upper It will thus be seen ;action of the coil springs 9 is limited by contact 10f the heads of screws I4 with the shoulders yaforesaid. Downward movement of the plate '10 under pressure against the action of springs 9 is permitted through the provision of the plurality of openings I5 in said plate registering with the wedge-shaped prongs 5, as shown in Figures 10 and 11 of the drawings.

Also secured to the top plate 4 adjacent the front edge thereof are a plurality of smaller Correspondingly formed in the top plate H] are the plurality of smaller openings H to receive therethrough the prongs l6 when said top plate if) is forced or pressed downwardly, as clearly shown in Figure 9 of the drawings. These openings I-l are adapted to receive sole securing means (not shown) for the shank end of the sole.

Secured to and upstanding from the upper face of the plate I!) are the sole holding studs l8, certain of the same being arranged'to hold the toe or forwardportions of the soles in place,-certain others holding or guiding the rear ends of the (soles, as clearly shown in Figure 1 -of the drawings. In order to lock the soles in place between the studs l8, and to accommodate soles of varied sizes, I provide the adjustable locking plate I9 which is substantially of inverted T formation, having a central projecting portion and side projecting portions 2|. This plate carries two depending studs 23 and 241 which project in and operate through slots 25 and 26, respectively, in the movable plate It. The stud 24 is threaded and has a nut 27 engaged therewith while the stud 23 has a wing nut 28 engaged with it, as shown in Figure l of the drawings. Thus, this adjustable plate 20 may be moved longitudinally on the plate H] and locked in any adjusted position, there being a finger piece 29 formed on the forward end of the plate M to manually actuate the same.

At the inner ends of the projections iii are the upstanding studs 30, while at the outer ends of the projection 26 of the plate 59 are the studs 3|, said studs 30 and 3! being flattened on their outer faces. These studs 39 and 3!, as clearly shown in Figure 1 of the drawings, are adapted to contact with the side edges of the rear portions of the soles of the shoes when the latter are in position on the plate l0 and the adjustable plate E9 is brought into position tolock said soles thereon. Thus, the soles may be retained in secure position on the plate Hi preparatory to the formation of the indentations therein.

When the soles have been locked in position on the plate it] between the studs l8 and the adjusting plate i9, a plunger or press 32 is adapted to be applied, as shown in Figures 10 and vl1 of the drawings. Thus, the top plate it with the soles or taps thereon is forced downwardly and the prongs 5 and 56 are caused to project into the sole or soles. The series of prongs I6 form the aforesaid openings if in the sole or tap which, as aforesaid, are adapted for use in securing the sole to a shoe. The wedge-shaped prongs 5 will cause wedge-shaped indentations 33 to be formed in uniform arrangement on the sole or tap. Thereupon, when pressure is released, the plate iil will be moved to its raised position under action of the springs 9 and the soles withthe indentations 33 therein may be re.- moved. The hob nails 34 are then inserted in these openings 33, as shown in Figure 16, and the soles with the hob nails so inserted in position are then introduced in another machine whereupon a press or plunger 35 is applied to secure these hob nails in place and clinch the same, as clearly shown in Figure 17 of the drawmgs.

Inthis manner the hob nails will be uniformly applied to the soles. There will beno interference with the stitching of the soles to the shoes or to the securing of the same otherwise on the outsoles of shoes. The hob nails will be effectively and permanently secured in position without injuring the heads thereof.

From the foregoing description, my improved method and the apparatus used for the applying of hob nails to shoes will be readily understood and it will be seen that I have provided a comparatively simple, inexpensive and efficient in form, proportion and in minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of the invention.

'What I claim is. v I

1. A method of attaching hob nails to soles of shoes, including looking a sole in a die, mechanically forming a multiplicity of uniformly arranged deep-set openings in one face of said sole by the application of pressure on said sole while in said die, and simultaneously forming a series of openings at one end adapted to receive solesecuring means.

2. A method of attaching hob nails to soles of shoes, comprising mechanically forming uniformly arranged deep-set openings in one face of a sole, manually inserting nails in said openings, mechanically pressing and clinching in one operation said nails in the sole, and securing the sole to a shoe.

3. The method of attaching hob nails to soles, including locking the sole in a die, mechanically forming a multiplicity of uniformly arranged deep-set openings in one face of the sole by the application of pressure to the latter while in the die, removing the sole and fixing the same on a stationary device, manually inserting the nails'in said openings, and applying pressure in one operation to the heads of all of the nails in said sole to clinch said nails in said sole.

4. A method of applying hob nails to soles of shoes, comprising mechanically forming a multiplicity of uniformly arranged wedge-shaped recesses in one face of a sole, manually inserting the stems of hob nails in said recesses and permitting the head of said nails to project above the surface of the sole, and applying pressure mechanically and simultaneously to the heads of all of said nails, to clinch the latter to said sole.

THOMAS F. CARFAGNO. 

